Melting device

This melting device is provided with: a heating coil unit into which a first melting raw material is inserted; a support part that supports the lower end of the first melting raw material from below at a position above the lower end of the heating coil unit; and a guide part that guides the second melting raw material such that the second melting raw material is inserted into the heating coil unitin a state of being laminated so as to be in contact with the first melting raw material. 本熔解装置具备：加热线圈部，其供第一熔解原料插入；支承部，其在比加热线圈部的下端靠上方的位置处从下方支承第一熔解原料的下端；以及引导部，其对第二熔解原料进行引导，使得第二熔解原料在以与第一熔解原料接触的方式被层叠的状态下被插入到加热线圈部。